dynomat/sound deadening

[aqrhine]

I realized today when i drive down the road you can hear my roof panel and door panels vibrating like crazy. I am definately going to have to put a sound deadener in my cab. I would like to do everything - Floors, Roof, Rear panel below glass, Rear and front doors. How many Sq. foot will it take to do an extended cab 2001 silverado? and is there a pre-assembled kit?

[RichLockyer]

Crossposting an OLD message here, but it'll save you a few bucks. Dynamat and it's clones are way overpriced:

Regarding the discussion about sound deadening the rear cabin wall. I have the TRD duals and they have a slightly annoying drone at highway cruising speed. I ordered some sound absorbing foam from McMaster-Carr over the net, and it worked perfect for this application. The part number is 5692T49 and the description is "Flat Sound Absorbing Foam, Adhesive Back, Skinned Surface, 1" thick, 54" wide." I ordered 2' at a cost of $18.02 which was just the right amount to do the back wall in the Tundra. I also ordered a sheet of the generic Dyna-Mat (part number 9709T19, polymetric mastic damping sheet, adhesive backed, 32"x54") from McMaster-Carr. I removed those back vent covers and covered the outside of the covers with cut-to-fit strips of the sound damping sheet. I did not cover up the holes in the vents. I plan on using the rest of the polymetric dampening sheet in other areas later.

I couldn't ask for better results. This mod resulted in a significant reduction in road noise and I can barely hear those TRD duals now while cruising.

That 1" sound absorbing foam is the trick. Per the catalog specifications, it has a noise reduction coefficient (NRC) of 0.80, which is the best I could find in a 1" thick or less absorber (an NRC of 1.00 is the best you can get and typically only available in foams >3" thick). Rather than just dampen the sound waves, sound absorbers are designed to convert the sound waves to heat energy, thereby eliminating them (with an NRC of 0.80, it eliminates 80% of the sound waves that strike it).

The website for McMaster-Carr is www.mcmaster.com

Alan

[cxpcman]

there are a lot of products out there that can help you in that area but plz dont use butyl based ones

[aqrhine]

well see you guys didn't really tell me anything that i asked.. i mean i know dynomat is overpriced and all that's why i said sound deadener, and put dynomat/sound deadener because dynomat is synonymous with sound deadener. What I need to know is how many square feet I will need to cover. I will do research and further look into which product I will use later on. However the amount that I will need will be a factor. I figured rather then spending a couple hours with a tape measure perhaps someone who has already done this can save me that labor.

[cxpcman]

well 100-120 sq. ft single layer will cover entire cab ,roof, doors , back. if you want to do double layer in doors firewall or back you gonna need a little bit more